我参考了本教程的可扩展列表视图
http://www.androidhive.info/2013/07/android-expandable-list-view-tutorial/
我的主要活动
BusActivity extends Activity {
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild,listDataStart,listDataEnd;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get the listview
expListView = (ExpandableListView) findViewById(R.id.lvExp);
// preparing list data
prepareListData();
listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild,listDataStart,listDataEnd);
// setting list adapter
expListView.setAdapter(listAdapter);
// Listview Group click listener
expListView.setOnGroupClickListener(new OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
// Toast.makeText(getApplicationContext(),
// "Group Clicked " + listDataHeader.get(groupPosition),
// Toast.LENGTH_SHORT).show();
return false;
}
});
// Listview Group expanded listener
expListView.setOnGroupExpandListener(new OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Expanded",
Toast.LENGTH_SHORT).show();
}
});
// Listview Group collasped listener
expListView.setOnGroupCollapseListener(new OnGroupCollapseListener() {
@Override
public void onGroupCollapse(int groupPosition) {
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Collapsed",
Toast.LENGTH_SHORT).show();
}
});
// Listview on child click listener
expListView.setOnChildClickListener(new OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
// TODO Auto-generated method stub
Toast.makeText(
getApplicationContext(),
listDataHeader.get(groupPosition)
+ " : "
+ listDataChild.get(
listDataHeader.get(groupPosition)).get(
childPosition), Toast.LENGTH_SHORT)
.show();
return false;
}
});
}
/*
* Preparing the list data
*/
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
listDataStart = new HashMap<String, List<String>>();
listDataEnd = new HashMap<String, List<String>>();
// Adding child data
listDataHeader.add("Volvo");
listDataHeader.add("Deluxe");
listDataHeader.add("Express");
listDataHeader.add("Ordinary");
// Adding child data
List<String> volvo = new ArrayList<String>();
volvo.add("The Shawshank Redemption");
volvo.add("The Godfather");
volvo.add("The Godfather: Part II");
volvo.add("Pulp Fiction");
List<String> nowShowing = new ArrayList<String>();
nowShowing.add("The Conjuring");
nowShowing.add("Despicable Me 2");
nowShowing.add("Turbo");
nowShowing.add("Grown Ups 2");
List<String> now = new ArrayList<String>();
now.add("The Conjuring");
now.add("Despicable Me 2");
now.add("Turbo");
now.add("Grown Ups 2");
List<String> comingSoon = new ArrayList<String>();
comingSoon.add("2 Guns");
comingSoon.add("The Smurfs 2");
comingSoon.add("The Spectacular Now");
comingSoon.add("The Canyons");
List<String> comingup = new ArrayList<String>();
comingup.add("2 Guns");
comingup.add("The Smurfs 2");
comingup.add("The Spectacular Now");
comingup.add("The Canyons");
listDataChild.put(listDataHeader.get(0), volvo); // Header, Child data
listDataChild.put(listDataHeader.get(1), now);
listDataStart.put(listDataHeader.get(0), nowShowing); // Header, Child data
listDataStart.put(listDataHeader.get(1), comingup);
);
listDataEnd.put(listDataHeader.get(0), volvo); // Header, Child data
listDataEnd.put(listDataHeader.get(2), comingSoon);
}
}
我的适配器
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild,listStart,listEnd;
public ExpandableListAdapter(Context context, List<String> listDataHeader,
HashMap<String, List<String>> listChildData,HashMap<String, List<String>> listStart, HashMap<String, List<String>> listEnd) {
this._context = context;
this._listDataHeader = listDataHeader;
System.out.println("Start"+listStart+"Bus"+listChildData+"End"+listEnd);
this._listDataChild = listChildData;
this.listStart=listStart;
this.listEnd=listEnd;
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.get(childPosititon);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String) getChild(groupPosition, childPosition);
System.out.println("Child Text"+childText);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
}
TextView txtListBus= (TextView) convertView
.findViewById(R.id.txt_busno);
if(groupPosition==0)
{
//txtListBus.setBackgroundColor(Color.parseColor("#FED966"));
//txtListBus.setTextColor(Color.parseColor("#A07900"));
}
else if(groupPosition==1)
{
txtListBus.setBackgroundColor(Color.parseColor("#FED966"));
txtListBus.setTextColor(Color.parseColor("#A07900"));
}
else if(groupPosition==2)
{
txtListBus.setBackgroundColor(Color.RED);
txtListBus.setTextColor(Color.BLACK);
}
else
{
txtListBus.setBackgroundColor(Color.BLUE);
txtListBus.setTextColor(Color.WHITE);
}
txtListBus.setText(childText);
TextView txtList= (TextView) convertView
.findViewById(R.id.txt_start);
if(groupPosition==0)
{
txtList.setBackgroundColor(Color.parseColor("#FED966"));
txtList.setTextColor(Color.parseColor("#A07900"));
}
else if(groupPosition==1)
{
txtList.setBackgroundColor(Color.parseColor("#64D8CD"));
txtList.setTextColor(Color.parseColor("#067B6F"));
}
else if(groupPosition==2)
{
txtList.setBackgroundColor(Color.RED);
txtList.setTextColor(Color.BLACK);
}
else
{
txtList.setBackgroundColor(Color.BLUE);
txtList.setTextColor(Color.WHITE);
}
txtList.setText(childText);
TextView txt= (TextView) convertView
.findViewById(R.id.txt_end);
if(groupPosition==0)
{
txt.setBackgroundColor(Color.parseColor("#FED966"));
txt.setTextColor(Color.parseColor("#A07900"));
}
else if(groupPosition==1)
{
txt.setBackgroundColor(Color.parseColor("#64D8CD"));
txt.setTextColor(Color.parseColor("#067B6F"));
}
else if(groupPosition==2)
{
txt.setBackgroundColor(Color.RED);
txt.setTextColor(Color.BLACK);
}
else
{
txt.setBackgroundColor(Color.BLUE);
txt.setTextColor(Color.WHITE);
}
txt.setText(childText);
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.size();
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public int getGroupCount() {
return this._listDataHeader.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
System.out.println("Group position"+groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.ls_head);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
if(groupPosition==0)
{
lblListHeader.setBackgroundColor(Color.parseColor("#FFD243"));
lblListHeader.setTextColor(Color.parseColor("#A07900"));
}
else if(groupPosition==1)
{
lblListHeader.setBackgroundColor(Color.parseColor("#00BFAC"));
lblListHeader.setTextColor(Color.parseColor("#067B6F"));
}
else if(groupPosition==2)
{
lblListHeader.setBackgroundColor(Color.RED);
lblListHeader.setTextColor(Color.BLACK);
}
else
{
lblListHeader.setBackgroundColor(Color.BLUE);
lblListHeader.setTextColor(Color.WHITE);
}
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
列表项布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="55dp"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="55dp"
android:background="#fff"
android:orientation="horizontal" >
<TextView
android:id="@+id/txt_start"
android:layout_width="130dp"
android:layout_height="match_parent"
android:text="Hello"
android:gravity="right|center_vertical"
android:textColor="#000"
android:textSize="17dp" />
<LinearLayout
android:layout_width="50dp"
android:layout_height="55dp"
android:background="@drawable/ic_launcher"
android:orientation="horizontal" >
<TextView
android:id="@+id/txt_busno"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
<TextView
android:id="@+id/txt_end"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:text="Hello"
android:textColor="#000"
android:textSize="17dp" />
</LinearLayout>
list_group 与链接保持相同
在此子列表中只有一个文本视图。我想将图像视图和文本视图添加到子列表中。我可以通过更改 list_item.xml 以包含视图来添加此内容。如何向具有多个视图的子视图添加数据？
按照教程
添加视图（ImageView 和 TextView 到您的）list_item.xml
然后在你的 ExpandableListAdapter 更新以下方法
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.lblListItem);
// Get Id's of new added Text views here
TextView myNewText= (TextView) convertView
.findViewById(R.id.new_id);
// Get Id's of new added Image views here
ImageView myImg= (ImageView) convertView
.findViewById(R.id.new_id_img);
txtListChild.setText(childText);
// Set Text & Image Here
myNewText.setText(childText);// use your desired text to display instead of 'childText'
myImg.setBackgroundResource(R.drawable.ic_launcher);
return convertView;
}
如何将数据表单 Activity 传递给适配器
在您的 prepareListData() 方法中
添加
List<String> newList = new ArrayList<String>();
newList.add("2 Guns");
newList.add("The Smurfs 2");
newList.add("The Spectacular Now");
newList.add("The Canyons");
newList.add("Europa Report");
并在方法底部添加此
listDataChild.put(listDataHeader.get(3), newList);